Finarfin's children have Orodreth, Gelmir 1, Arminas, Guilin and his sons (Gwindor + Gelmir 2), Edrahil for the House of Finarfin (I don't recognize who Ornil is). Gwindor and his brother may be born in Middle-earth (my preference, making him similar to Finduilas in age). I would really like Gildor's father Inglor to be another lord in service to House Finarfin, and one of Finrod's companions on his suicide mission. And later add Finduilas, Gil-galad, and Gildor.
Turgon has aaallll the lords of Gondolin (Ecthelion, Glorfindel, Rog, Salgant, Egalmoth, Duilin, Legolas, Penlod, Galdor 2), plus Idril, Aredhel, Pengolodh, Edrahil, and later Maeglin.
Thingol has Celeborn, Melian, Luthien, Mablung, Beleg, Daeron, Saeros, and Galadriel. I would like Galadhon and Galathil to exist at least in the background, since one of them (I forget which) is Nimloth's father.
Arnorion suggested that Oropher live in Doriath and marry a distant kin of Denethor, a suggestion which I second.
Cirdan has Galdor 1, plus ??
Fingon and Fingolfin will have ??
Sons of Feanor will have each other and Celebrimbor, plus ??. Should we introduce the creeps [in service to Celegorm] who later leave Dior's sons to starve?
We can use Erestor (the guy in Rivendell) as a lord serving under either Fingolfin or Maedhros. Or as a Sindarin guy.
Edit: Haerangil made a thread to discuss characters/names not currently associated with any of the hosts:
https://forums.signumuniversity.org/index.php?threads/unalligned-characters.3056/